package com.nowcoder.community.util;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;


/**
 * 获取cookie的小工具
 */
public class CookieUtil {
    public static String getValue(HttpServletRequest request, String name){
        if(request == null || name == null)
            throw new IllegalArgumentException("参数为空！");

        Cookie[] cookies = request.getCookies();
        if(cookies != null){
            for(Cookie cookie : cookies){
                if(cookie.getName().equals(name))
                    return cookie.getValue();
            }
        }

        return null;

    }
}
